error

Exception has been thrown by the target of an invocation.
  at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00048] in <eae584ce26bc40229c1b1aa476bfa589>:0
  at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in <eae584ce26bc40229c1b1aa476bfa589>:0
  at SDG.Unturned.SteamChannel.receive (Steamworks.CSteamID steamID, System.Byte[] packet, System.Int32 offset, System.Int32 size) [0x003bd] in <e193875da6cc46db8333bf1cc93253df>:0
Object reference not set to an instance of an object
  at SDG.Unturned.LevelManager.askArenaState (Steamworks.CSteamID steamID) [0x000d7] in <e193875da6cc46db8333bf1cc93253df>:0
  at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke(System.Reflection.MonoMethod,object,object[],System.Exception&)
  at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00032] in <eae584ce26bc40229c1b1aa476bfa589>:0